SQL 中的 PIVOT 给出错误 - ORA-00933: SQL 命令未正确结束

Question

Oracle SQL 中的以下查询为我提供了一个由 ID、Key、Value 组成的表。我想将键转换为列，将值转换为列值，同时保持 ID 作为行的 ID。我尝试了 PIVOT 查询。但我收到一个错误 - ORA-00933: SQL 命令未正确结束。

初始 SQL

SELECT * FROM API.publisher_message_queue_detail
WHERE message_seq_id 
IN (SELECT message_seq_id FROM API.publisher_message_queue WHERE status='N' AND MESSAGE_TYPE='RetailerNewConnection') ;

结果表

我想将此表转换为

我尝试过的 PIVOT 查询

SELECT * FROM API.publisher_message_queue_detail
WHERE message_seq_id IN 
    (SELECT message_seq_id FROM API.publisher_message_queue WHERE status='N' AND MESSAGE_TYPE='RetailerNewConnection') 
    PIVOT(
    COUNT(message_seq_id)
    FOR MSG_KEY
    IN (
        'MobileNo',
        'ActivatedDate',
        'ActSimNo',
        'ActActdevice',
        'PmsProfileID',
        'PaymentMode',
        'AgentCode',
        'ActPrePost',
        'Sbu',
        'Channel',
        'SalesPath',
        'OrderId'
    )
  )
;

但是，我收到以下错误。我的错误是什么？

ORA-00933: SQL command not properly ended
00933. 00000 -  "SQL command not properly ended"
*Cause:    
*Action:
Error at Line: 10 Column: 5

Answer 1

我不喜欢将发明的语法用于没有它很容易编写的东西。只需使用条件聚合：

SELECT mq.AgentCode, . . . ,  -- whatever columns define each row
       MAX(CASE WHEN mqd.msg_key = 'MobileNo' THEN mqd.msg_value END) as MobileNo,
       MAX(CASE WHEN mqd.msg_key = 'ActivatedDate' THEN mqd.msg_value END) as ActivatedDate,
       . . . 
FROM API.publisher_message_queue JOIN
     API.publisher_message_queue_detail mqd
     ON mqd.message_seq_id = mq.message_seq_id
WHERE mq.status = 'N' AND mq.MESSAGE_TYPE = 'RetailerNewConnection'
GROUP BY mq.AgentCode, . . . ;

或者如果你想要父表中的所有列：

SELECT *
FROM API.publisher_message_queue JOIN
     (SELECT mqd.message_seq_id,
             MAX(CASE WHEN mqd.msg_key = 'MobileNo' THEN mqd.msg_value END) as MobileNo,
             MAX(CASE WHEN mqd.msg_key = 'ActivatedDate' THEN mqd.msg_value END) as ActivatedDate,
             . . . 
      FROM API.publisher_message_queue_detail mqd
      GROUP BY mqd.message_seq_id
     ) mqd
     USING (message_seq_id)
WHERE mq.status = 'N' AND mq.MESSAGE_TYPE = 'RetailerNewConnection';